Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AA6FD callsign genealogy
Currently held by Mountaintop Operators
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by AA6FD's current licensee, walking backwards.
- KK6YQIcancelledMountaintop Operators Of Northern CaliforniaCAgranted 2015-11-10cancelled 2015-12-01
Successor callsigns
Callsigns held now by people who previously held AA6FD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AA6FD, oldest first.
- MORGEN, JERRY J CA1997-04-01 → cancelled 2009-04-02
- Mountaintop Operators CA2025-12-16 active